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ISSN 2070-7401 (Print), ISSN 2411-0280 (Online)
Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa
CURRENT PROBLEMS IN REMOTE SENSING OF THE EARTH FROM SPACE

  

Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2021, Vol. 18, No. 6, pp. 155-164

Satellite mapping of the thermal response of ecosystems of Northern Eurasia to climate change

V.I. Gornyy 1 , A.V. Kiselev 1 , S.G. Kritsuk 1 , I.Sh. Latypov 1 , A.A. Tronin 1 
1 Saint Petersburg Scientific Research Center for Ecological Safety RAS, Saint Petersburg, Russia
Accepted: 29.11.2021
DOI: 10.21046/2070-7401-2021-18-6-155-164
The paper analyzes features of the spatio-temporal dynamics of remotely measured land surface temperature (LST) of ecosystems in Northern Eurasia as a response to climate change and anthropogenic impact. The map of LST rate of change and the growing season duration trend maps were built using the per-pixel regression analysis. The algorithm was applied to Terra and Aqua satellites (MODIS instrument) data for the time period from 2002 to 2020. Results include: maps of annual average temperature of the growing season, maps of the warmest months temperature trend and maps of the growing season length trend. It was found that there is no general trend towards an increase in the surface temperature of ecosystems of Northern Eurasia. A regular system of large areas of heating and cooling of the land surface was revealed instead. The result obtained contradicts the existing conclusions of climatologists based on the results of long-term observations of air temperature at weather stations. The proposed explanation of the revealed contradiction is a hypothesis of activation of the general atmospheric circulation in the Ferrel cell is proposed.
Keywords: Northern Eurasia, atmosphere, ecosystems, satellite, temperature, mapping, multiyear trends, global warming
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